Electric headlight



Nov. 11 1924. 1,514,637

J. TEIPEL ELECTRI C HEADLIGHT Filed Oct. 11 1922 [N VEN TOR A T TOR/V5 rs Patented Nov ll, W24.

than? earner eerie,

JOSEPH TEIPEL, OF ST. LOUIS, MISSOUIELI, .ASSIGNOR TO MANCHA STORAGE BATTERY LOCOMOTIVE COMPANY, OF ST. LOUIS, MISSOURI, CORPORATION OF DELAW'ARE.

ELECTRIC HEAD-LIGHT.

Application filed October 11, 1922. Serial No. 593,765.

To all whom it may concern Be it known that I, J osnerr TEIPEL, a citizen of the United States, residing at St. Louis, Missouri, have invented. a certain new and useful Improvement in Electricl-lead lights, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to electric headlights.

One-object of the invention is to provide an electric headlight that is practically gas and flame proof, thereby making it particularly well adapted for use on electric storage battery mine locomotives, due to the fact that thereis no possibility of a flame or spark escaping from the interior of the casing of the headlight and igniting a leak in a mine.

Another object is to provide an electric headlight having the desirable characteristics above mentioned that can be opened quickly and easily to inspect or renew the incandescent lamp arranged inside of the casing of the headlight.

And still another object is to provide a novel means for preventing an unauthorized person from tampering with the in candescent lamp of an electric headlight or removing the lens of the headli ht. Other objects and desirable characteristics of my invention will be hereinafter pointed out.

Fi re 1 is a vertical longitudinal sectiona view of an electric headlight constructed in accordance with my invention.

Figure 21 is a bottom plan view of said headlight, and a Figure 3 is a vertical transverse sectional view, taken on the line 3 3 of Figure 1, looking in the direction indicated by the arrows.

Referring to the drawings, A designates the casing of my improved headlight which preferably consists of a cast metal shell of inner side of same conforms substantially to the curvature of the lens B. The rear end of the shell or casing A. is closed by a removable cap D provided with an internally screw-threaded flange 1 that is screwed onto an externally screw-threaded portion at the rear end of the casing.

The incandescent lamp E that constitutes the lighting unit of the headlight is mounted in a socket F arranged inside of the casing A, and a reflector G of substantially frustoconical form is also arranged inside of'the casing. In order that the lamp and reflector may be removed easily, I mount the socket F in a removable spider or skeletonlike supporting device which is also used to clamp the reflector G against a stop, pref-- erabiy an annular rib 2 on the inside of the casing A. In the form of my invention herein illustrated said spider or skeletonlike supporting device comprises a split hub portion 3 that embraces the socket F, arms 4 projecting radially from said hub portion and clamping devices 5 at the outer endsof said arms that extend longitudinally of the casing A with their front ends bearing against the rear side of the reflector G so as to clamp and hold the same against the ribQ, and their rear ends bearing against the inner side of the removable cap or closure D at the rear end of the casing A, said cap being adapted to be screwed up tight so as to exertpressure on the devices 5 in a direction to clamp the reflector against the rib 2 on the interior of the casing. The split in the hub portion 3 of the spider is preferably extended into one of the arms 4, as shown in Figure 3, and said arm is provided with an adjusting screw 6 that is adapted to be tightened so as to cause the hub portion 3 to clamp the lamp socket F and sccurely hold it in proper position, The electrio cable H that is connected to the lamp socket is preferably'led into the casing through a packing device 7 in the cap D which produces a tight joint around said cable and the cap D through which it passes.

Due to the fact that the casing of the headlight is composed of a cylindrical-shaped member whose opposite ends are closed by closures that are screwed onto the casing, it is practically impossiblefor a fiame or spark produced inside of the casing to escape therefromiConsequently, such a headlight is particularly well adapted for use on electric I tightly against the 'rib '2.

ing an unauthorized person ctromren ioving storage battery mine locomotives, because it eliminates thepossibility of agas leak in a mine being ignited by a spark or flame produced on the interior of the casing of the v headlight; it is ofsucli simple design thatit canbe manufactured at a low cost; it is rugged enough to successfully withstand the rough usage to which the headlights ofmine locomotives are subjected, and notvvithstanding the fact that the casing of the headlight is substantially flame and 1' gas proof,

the casing vcan beopenedheasily to ,provide: access to the incandescent lamp E by simply removing the end cap. 'D." vThe lensB, can

be renewed easily, due tonthe lfact'; that i moved as .ai,. s ingle.tunit. bylivv'ithdravring said spider endvvi'sezlout of the rear endlof-athe -f ee- TQ EPlMQS tiira l ta ylo rir essary to insertthe spiderinthe ca'singf land move itjif'orvvardly until I the reflector G comes in contactQWitli the annular rib v2,011 4 the inside of the casing and 'tlien screw the end cap D onto thecasing, the pressure a l Which said end cap exerts onthe. clamping devices 5 of; the spider causing said devices to clamp; the edge plor-tionl otithereflector Various. means may. be used: for preventthe end cap 'D ,-and the ,.clan1ping ring. C from the ,lens} B, but, I prefer -itoiprovide r I the casing A vwith apair'joflaterally-pro jecting Jugs 8 through 'Vvvhicha lockingbar H I can be inserted lengthwise:ofttl egcasing .A, so as to cq'roperat'ej With r'ilos ornotches.

9 I in the clamping ,ring IG. and in; ,tl1e rend cap D to prevent said, parts fromL-being rotated inf'a direction to'gr'emove them from is the casing A,-. said locking bar I .beinguretained inoperative position by meansof or recesses 9,; as shown ini M to compensate forgvvear pt on the casing; and, .or r lthe' ing ring Cpandthejcasf g' .on its unders'idegvvith ":1: hat areadapt it re i {structure to lvvhic'h @1116 e. ieadlig y 'nected. "After the end cap I D, and .lens: ,re-Efa pin 10 in same that hearsagainst.oneside of one ofr'the lugs 8, ,and av padlockll Whose. hasp is adapted to be. inserted v through a hole in lsaidlockingibarrvatgthe othertside of saidf lug, as, shownainI F igure 2.' The ring G and theend 93.15 D ai efleach provided 1 With a} plurality; of; notche lugs 2,;soiastaini ng C have been ,s crevved-conto ,Qthe H casing tightly thelocking bar lisf slipped endv vis e through the lugsB .omthe cas ng,v so as to cause the end portions of said bar V; able clo sures screvved onto. the opposite endsi-i- B0 to, enterAlongitudinallyaligned notches 9 in said [end cap D and! ring C, it being necessary to insert the rear end of the locking bar in the front lug'on the casing and move said locking bar rearwardly so as to positionthe pin 10 in said bar irr-front' of said frontrlug. Thereafter, the hasp of a pad lock 11 is inserted through a hole 11 in the blocking bar 1 arranged at the rear of the front lug 8 on the casing so as to lock the bar I and preventit frombeing moved en-dWise to disengage the end portions of same from the end cap'Dand lens clampingring C. This-unethod of locking the removableparts of the casing of the head- ,light effectively I prevents an unauthorized person from tampering with the incandescent lamp in the casing of the: headlight or from removing-the lens it is exceptionally rugged andstrong and it can be operated quickly to release or look the removable portions of the; casing oftheheadlight.

Having, thus odescribed ,my. invention, q-vvhat I tclaim-as nevmand desire to? secure by Letters Patent is 1. An electric headlight, 'vcomprising a casing provided on its. inner, -sideivvith a stop, a removablelclosure for one ,endof said casing, a removable supportingi struc' ture arranged inside'of said casing between ,sure in a direction toimove saidsupporting structure towards said-stop, a lamp socket cla-lnped in said supporting structure,v and a reflector combinedr-vvith said,lamp.- socket and arrangedso thatgits peripheralv edge ,portion is I held pressed. tightly, against the stop-on the inner side of the casing.

2.; Anuelectric headlight, icomprising a easing provided on its innei side -with a ,stop, a; removable closure arranged: atone endot saidcasing, ailamp, socket anda reflectorgarranged inside of the casing, a removable, supporting means for said socket andv reflector consisting of a a spider: having I a hub portion in which the socket is clamped and arms that project radiallyv from said hubuportion and bear against thescasing, anddevices at theends of said arms positionedbetween the reflector and the removable closure so as to hold the reflector in engagement With-said stop.

* ,;electric =headlight, comprising a casing,=rremo vable closures; at the opposite: hiendsof vsaidcasing, a, bar on theexterior rof; the ;casingremovably mounted in a =stationary -part .of-athe casing-and arranged in engagement mvithlgbotlr of .said -..closures; so

gas: to N prevent them afrom being aremoveda said bar in operative position.

4. v,Anelectnc headlight, comprising a cylindr cal casing provided with lugs, removfrom the I casing,t and means tormetaining of said casing, and a locking bar arranged longitudinally of the casing in the lugs on the casing and positioned in grooves or openings in the removable closures on the casing.

5. An electric headlight, comprising a cylindrical casing provided with lugs, removable closures screwed onto the opposite ends of said casing, a locking bar arranged longitudinally of the casing in the lugs on the casing and positioned in grooves or openings in the removable closures on the casing, and means for preventing an unauthorized person from disengaging said locking bar from said closures.

6. An electric headlight, comprising a cylindrical casing provided on its interior with a stop, a lens arranged at one end of said casing, a clamping ring for said lens screwed onto the casing, a removable cap screwed onto the other end of the casing, an electric lamp socket and a reflector arranged inside of the casing, a supporting device for said socket and reflector removably mounted inside of said casing between said cap and the stop on the inside of the casing, a locking bar arranged longitudinally of the casing in engagement with said clamping ring and cap for preventing the same from being unscrewed, and means for preventing an unauthorized person from disengaging said locking bar from said ring and cap.

JOSEPH TE'IPEL. 

